《Table 6 Cotton yield and its components under different treatments》

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《"Effects of Copper-based Nutritional Foliar Fertilizers on Photosynthetic Characteristics,Yield and Disease Control Efficiency of Cotton"》

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Means in the same vertical column with the same letter are not different significantly at the 5%level in the same year.

Different treatments had significant effects on cotton yield and yield components（Table 6）.The trends of test results in the two years were basically the same.The lint yields of the CFZn B，CFFe，CF and KCD treatments were significantly higher than that of the CK.In 2013，the lint yields of the CFZn B，CFFe，CF and KCD treatments increased significantly by 11.26%，8.77%，6.81%and 5.80%，respectively，compared with the CK.Among them，the CFZn B treatment had the highest lint yield，which also significantly increased by 5.16%compared with KCD treatment.In 2014，the lint yields of the CFZn B，CFFe，CF and KCD treatments were significantly higher than that of the CK by 12.34%，10.20%，7.80%and 5.96%，respectively.Among them，the CFZn B treatment had the highest lint yield，which also significantly increased by 6.02%compared with the KCD treatment.The BDM treatment had the lowest lint yield，which was 1.39%and1.98%lower than the CK in 2013 and 2014，respectively，but the differences from the CK were not significant.According to the analysis of yield components，the main reason for the increase was that the CFFe，CFZn B，CF and KCD treatments promoted the increase of cotton boll number，and the numbers of cotton bolls in the CFFe，CFZn B and CF treatments were significantly higher than that in the CK，by 4.69%-7.28%and 5.75%-8.09%in 2013and 2014，respectively；furthermore，the boll weight of the CFZn B treatment was significantly higher than that of the CK，0.37 and0.30 g（7.86%and 5.88%）higher than the CK，respectively，while there were no significant differences in boll weight between other treatments；the different treatments had no significant differences from the CK in lint percentage；and the pre-frost lint yields in various treatments were significantly higher than that in the CK，4.66%-6.31%and 4.85%-6.15%higher than the CK in2013 and 2014，respectively，suggesting that various treatments could significantly promote early maturity of cotton，and spraying CFZn B，CFFe，CF and KCD not only could significantly improve cotton lint yield，but also could promote early maturity of cotton.